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问题 不定项选择

地球可近似看成球形，由于地球表面上物体都随地球自转，所以有[ ]

A．物体在赤道处受的地球引力等于两极处，而重力小于两极处

B．赤道处的角速度比南纬30°大

C．地球上物体的向心加速度都指向地心，且赤道上物体的向心加速度比两极处大

D．地面上的物体随地球自转时提供向心力的是重力

答案

答案：A

单项选择题

In the dining room of my grandfather’ s house stood his heavy clock. Meals in the dining room were a (21) for our four generations to become one. My grandfather’ s clock always stood like a trusted old family friend, (22) us playing jokes and tellingstories, which was already a (23) of our life.

When I was a child, the old clock interested me. I watched and listened to it during (24) I was surprised how at (25) times of the day, the clock would strike three times, six times or more, with a wonderful great (26) that echoed throughout the house. The clock chimed year after year, a part of my (27) , a part of my heart.

Even more (28) to me was my grandfather’s special action each day. He meticulously (29) the clock with a special key each day. The key was magic to me. It (30) our family’ s magnificent clock ticking and striking all year round.

22（）

A.comfortable 

B.hopeful 

C.wonderful 

D.skillful
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单项选择题

中 * * 党领导人民建设社会主义生态文明。树立尊重自然、顺应自然、保护自然的生态文明理念，增强（）的意识。

A.生态环境保护

B.绿水青山不是金山银山

C.绿水青山就是金山银山

D.绿色GDP
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